What's the difference between mechanical and siren?

Mechanical


Definition:

  • (a.) Pertaining to, governed by, or in accordance with, mechanics, or the laws of motion; pertaining to the quantitative relations of force and matter, as distinguished from mental, vital, chemical, etc.; as, mechanical principles; a mechanical theory; mechanical deposits.
  • (a.) Of or pertaining to a machine or to machinery or tools; made or formed by a machine or with tools; as, mechanical precision; mechanical products.
  • (a.) Done as if by a machine; uninfluenced by will or emotion; proceeding automatically, or by habit, without special intention or reflection; as, mechanical singing; mechanical verses; mechanical service.
  • (a.) Made and operated by interaction of forces without a directing intelligence; as, a mechanical universe.
  • (a.) Obtained by trial, by measurements, etc.; approximate; empirical. See the 2d Note under Geometric.
  • (n.) A mechanic.

Example Sentences:

  • (1) Such a signal must be due to a small ferromagnetic crystal formed when the nerve is subjected to pressure, such as that due to mechanical injury.
  • (2) These data suggest that the hybrid is formed by the same mechanism in the absence and presence of the urea step.
  • (3) Some common eye movement deficits, and concepts such as 'the neural integrator' and the 'velocity storage mechanism', for which anatomical substrates are still sought, are introduced.
  • (4) We have investigated the effect of methimazole (MMI) on cell-mediated immunity and ascertained the mechanisms of immunosuppression produced by the drug.
  • (5) One hour after direct mechanical cardiomassage (DMCM) a moderately pronounced edema of the intercellular spaces in the basal compartment of the seminiferous epithelium, normal content of lactate and succinate dehydrogenases, and a certain decrease in the activity of glucose-6-phosphate dehydrogenases and NAD- and NADP-diaphorases were noted.
  • (6) It is concluded that amlodipine reduces myocardial ischemic injury by mechanism(s) that may involve a reduction in myocardial oxygen demand as well as by positively influencing transmembrane Ca2+ fluxes during ischemia and reperfusion.
  • (7) Models able to describe the events of cellular growth and division and the dynamics of cell populations are useful for the understanding of functional control mechanisms and for the theoretical support for automated analysis of flow cytometric data and of cell volume distributions.
  • (8) The following is a brief review of the history, mechanism of action, and potential adverse effects of neuromuscular blockers.
  • (9) However, the mechanism of the inhibitory action is still somewhat uncertain.
  • (10) It also provides mechanical support for the collateral ligaments during valgus or varus stress of the knee.
  • (11) We studied the hemodynamic changes caused by bronchoscopy under LA in mechanically ventilated patients and the effect of LA on the endoscopic decline in arterial pO2.
  • (12) Together these observations suggest that cytotactin is an endogenous cell surface modulatory protein and provide a possible mechanism whereby cytotactin may contribute to pattern formation during development, regeneration, tumorigenesis, and wound healing.
  • (13) Dilutional studies comparing the mechanism of inhibition of monoamine oxidase produced by Gerovital H3 and by ipronizid demonstrated that Gerovital H3 was a reversible inhibitor of monoamine oxidase.
  • (14) To investigate the mechanism of enhanced responsiveness of cholesterol-enriched human platelets, we compared stimulation by surface-membrane-receptor (thrombin) and post-receptor (AlF4-) G-protein-directed pathways.
  • (15) Based on our results, we propose the following hypotheses for the neurochemical mechanisms of motion sickness: (1) the histaminergic neuron system is involved in the signs and symptoms of motion sickness, including vomiting; (2) the acetylcholinergic neuron system is involved in the processes of habituation to motion sickness, including neural store mechanisms; and (3) the catecholaminergic neuron system in the brain stem is not related to the development of motion sickness.
  • (16) Thus, mechanical restitution of the ventricle is a dynamic process that can be assessed using an elastance-based approach in the in situ heart.
  • (17) The mechanism by which pertussis toxin (PT) breaks the unresponsiveness of delayed-type hypersensitivity (DTH) to sheep red blood cells (SRBC) was examined in B10 mice.
  • (18) This suggests that a physiological mechanism exists which can increase the barrier pressure to gastrooesophageal reflux during periods of active secretion of the stomach, as occurs in digestion.
  • (19) The macrophage-derived product, interleukin 1 (IL 1) is thought to play an important regulatory role in the proliferation of T lymphocytes; however, its mechanism of action is unknown.
  • (20) Adding a layer of private pensions, it was thought, does not involve Government mechanisms and keeps the money in the private sector.

Siren


Definition:

  • (n.) One of three sea nymphs, -- or, according to some writers, of two, -- said to frequent an island near the coast of Italy, and to sing with such sweetness that they lured mariners to destruction.
  • (n.) An enticing, dangerous woman.
  • (n.) Something which is insidious or deceptive.
  • (n.) A mermaid.
  • (n.) Any long, slender amphibian of the genus Siren or family Sirenidae, destitute of hind legs and pelvis, and having permanent external gills as well as lungs. They inhabit the swamps, lagoons, and ditches of the Southern United States. The more common species (Siren lacertina) is dull lead-gray in color, and becames two feet long.
  • (n.) An instrument for producing musical tones and for ascertaining the number of sound waves or vibrations per second which produce a note of a given pitch. The sounds are produced by a perforated rotating disk or disks. A form with two disks operated by steam or highly compressed air is used sounding an alarm to vessels in fog.
  • (a.) Of or pertaining to a siren; bewitching, like a siren; fascinating; alluring; as, a siren song.

Example Sentences:

  • (1) Dictated by underlying physicochemical constraints, deceived at times by the lulling tones of the siren entropy, and constantly vulnerable to the vagaries of other more pervasive forms of biological networking and information transfer encoded in the genes of virus and invading microorganisms, protein biorecognition in higher life forms, and particularly in mammals, represents the finely tuned molecular avenues for the genome to transfer its information to the next generation.
  • (2) Emergency medical services providers routinely respond to emergencies using lights and siren.
  • (3) Every now and then some rich Oga or Madam comes along in their bulletproof cars and wailing sirens, and distorts the delicate equilibrium of this body of traffic.
  • (4) Off the south-west coast of Ibiza stands Es Vedrà, a 400m-high limestone rock which legend suggests was the island of the Sirens who lured sailors to their deaths in Homer's Odyssey.
  • (5) At 6pm it sounds like a war zone outside the office: you can hear nothing but sirens and the almost continuous drone of helicopters overhead.
  • (6) horns of cars, sirens of emergency vehicles and alarm signals of railroad crossings, and then displays them as vibration to the driver.
  • (7) The strange thing is, society is perhaps not quite in the same shape as most of the political elite - or for that matter, the siren voices who would have you believe that "everyone's middle class nowadays" - suggest.
  • (8) As dusk fell across the city a motorcade of flashing lights and sirens escorted him to the airport, where he thanked his hosts and organisers and the vice-president, Joe Biden, escorted him to the plane.
  • (9) Updated at 11.10pm GMT 10.29pm GMT @RanaGaza, on Twitter here , uploads audio of sirens in Gaza City and two strikes moments ago.
  • (10) IDF (@IDFSpokesperson) A few minutes ago, sirens in Tel Aviv sent residents running for shelter.
  • (11) As Operation Protective Edge launched, sirens sounded over large areas of Israel's south and air raid shelters were opened.
  • (12) They should ignore the siren voices about Ukip pacts, which would put the party back for years.
  • (13) Video by Chris Whitworth and Alex Purcell Victimhood is a real, brutal fact, and Ben Carson's Holocaust logic denies that | Gayatri Devi Read more Asked about abortion, another siren call to voters who dominate the Republican primary, Carson said he would appoint supreme court judges to overturn Roe v Wade , the 1973 decision that enshrines the right.
  • (14) They moved rapidly, but without lights or sirens; they were not heading into an emergency.
  • (15) In Trafalgar Square at 6.40pm, sirens could be heard from almost all directions.
  • (16) "I was here since 7am and just heard sirens and it was over so fast," said Daniel McKenzie from Darlington.
  • (17) Their faces stared up from the dusty stretch of tarmac outside New Cairo's police academy, a silent roll call of butchery laid out like a human carpet amid a cacophony of chants, sirens and camera clicks in the morning sun.
  • (18) The British Wind Energy Association said it was delighted that Miliband had "rightly ignored the siren calls to abandon wind as the driving force for reaching the [low carbon] targets".
  • (19) I’ve never seen so many police here, against the blare of sirens.
  • (20) Its rocket fire has caused fear and panic among Israelis in south and central Israel, with sirens sounding many times a day warning people to seek shelter.